Tool identification: The numerical method of specifying a single-point tool by listing its key angles and features is called the tool signature. Is this statement correct?

Introduction / Context:
Single-point cutting tools are defined by a set of geometric parameters (rake angles, clearance angles, nose radius, etc.). A compact way to communicate these values for manufacturing, inspection, and setup is the tool signature system.

Given Data / Assumptions:

• Use of ASA, ORS/ISO, or NRS systems to denote angular values and nose radius.
• Angles are typically recorded in degrees; nose radius in mm.
• Applies to turning tools and other single-point geometries.

Concept / Approach:
A tool signature is a sequence of numbers, each representing a specific element of tool geometry in an agreed order. For example, in one common convention: Back rake – Side rake – End relief – Side relief – End cutting edge angle – Side cutting edge angle – Nose radius. Listing these in numerals allows unambiguous identification and replication of a tool's cutting geometry.

Step-by-Step Explanation:

Verification / Alternative check:
Textbook examples show signatures like 8-6-5-5-10-15-0.8 mm, which can be interpreted directly into the corresponding tool angles and nose radius.

Why Other Options Are Wrong:
Labeling the statement “Incorrect” would ignore established nomenclature used universally in toolrooms and machining handbooks.

Common Pitfalls:
Mixing different systems (ASA vs ORS) without noting the order; omitting the nose radius value, leading to incomplete specification.

Final Answer:
Correct